13836932: UIScrollView Should Not Adjust Content Inset if it is Input View

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Description

Summary:

You can set a view as inputView for a editable view to appear in place of a keyboard. If this inputView has a scroll view this will erroneously receive a setContentInset after the keyboard finished its incoming animation.

Steps to Reproduce:

• Create a UITableViewController
• On a UIView that canBecomeFirstResponder set this VC's view as inputView
• have the UIView becomeFirstResponder

Expected Results:

• The UITableViewController's tableView should not have a contentInset

Actual Results:

• Every UIScrollView receives a contentInset, even if it is itself the inputView that was showing "as keyboard".

Regression:

• This automatic setting of contentInset started with iOS 6. It does not occur in iOS 5.

Notes:

I believe that the notification that gets sent after the keyboard/inputView animated in should take into consideration that scroll views that are subviews of the showing inputView don't get a contentInset set.

As a workaround I am subclassing UITableView and overriding setContentInset: to ignore the erroneous setting.

This is the call stack I get on this overwritten contentInset:

• thread 22108400: Swift 2.0b4: Allow if let and guard let to assign to self in failable value type initializers #1: tid = 0x1c03, 0x0000f6ca RTEDemoApp-[DTFormatTableView setContentInset:](self=0x099e5000, _cmd=0x09405f60, contentInset=(null)) + 58 at DTFormatTableView.m:16, stop reason = breakpoint 3.1 frame #0: 0x0000f6ca RTEDemoApp-[DTFormatTableView setContentInset:](self=0x099e5000, cmd=0x09405f60, contentInset=%28null%29) + 58 at DTFormatTableView.m:16
  frame 22108400: Swift 2.0b4: Allow if let and guard let to assign to self in failable value type initializers #1: 0x0373c1bd CoreFoundation__invoking___ + 29 frame #2: 0x0373c0d6 CoreFoundation-[NSInvocation invoke] + 342
  frame 22108354: Swift 2.0b4: Curried initializer syntax #3: 0x016c7def FoundationNSKVOForwardInvocation + 375 frame #4: 0x03737cf9 CoreFoundation_forwarding + 905
  frame 22108118: Apple Music: No Love Icon On CarPlay #5: 0x0373794e CoreFoundation_CF_forwarding_prep_0 + 14 frame #6: 0x00bc5029 UIKit-[UIScrollView(UIScrollViewInternal) _adjustForAutomaticKeyboardInfo:animated:lastAdjustment:] + 377
  frame 22107493: Xocde 7, can't run playground. Unable to create target for stub executable. unable to find executable for #7: 0x00c14ddc UIKit-[UITableView(UITableViewInternal) _adjustForAutomaticKeyboardInfo:animated:lastAdjustment:] + 73 frame #8: 0x00d87af9 UIKit-[UITableViewController _adjustTableForKeyboardInfo:] + 201
  frame 22107374: Xcode should mark debugging messages originating from the main thread #9: 0x00d86c27 UIKit-[UITableViewControllerKeyboardSupport _keyboardDidChangeFrame:] + 131 frame #10: 0x016d44f9 Foundation__57-[NSNotificationCenter addObserver:selector:name:object:]_block_invoke_0 + 40
  frame 22106545: automaticallyAdjustsScrollViewInsets doesn't change insets on iOS 9 #11: 0x037a20c5 CoreFoundation___CFXNotificationPost_block_invoke_0 + 85 frame #12: 0x036fcefa CoreFoundation_CFXNotificationPost + 2122
  frame 22105831: Application windows move erratically with two monitors #13: 0x01608bb2 Foundation-[NSNotificationCenter postNotificationName:object:userInfo:] + 98 frame #14: 0x00f08a29 UIKit-[UIInputViewTransition postNotificationsForTransitionEnd] + 682
  frame 22104678: Xcode7-beta4 (7A165t): libtool does not support -ios_version_min link editor flag #15: 0x00f01e5c UIKit__53-[UIPeripheralHost(UIKitInternal) executeTransition:]_block_invoke_01079 + 203 frame #16: 0x00ba2df6 UIKit-[UIViewAnimationBlockDelegate _didEndBlockAnimation:finished:context:] + 223
  frame 22103812: TestFlight does not support yet apps with watchOS 2 #17: 0x00b95d66 UIKit-[UIViewAnimationState sendDelegateAnimationDidStop:finished:] + 237 frame #18: 0x00b95f04 UIKit-[UIViewAnimationState animationDidStop:finished:] + 68
  frame 22102418: El Capitan Terminal password autofill suggestion #19: 0x006a57d8 QuartzCoreCA::Layer::run_animation_callbacks(void*) + 284 frame #20: 0x01ff0014 libdispatch.dylib_dispatch_client_callout + 14
  frame 22100305: Safari does not see my valid Safari Developer cert #21: 0x01fe07d5 libdispatch.dylib_dispatch_main_queue_callback_4CF + 296 frame #22: 0x036eeaf5 CoreFoundation__CFRunLoopRun + 1925
  frame 22098225: Add indexOfObject:inSortedRange:options:usingComparator: method in Swift Array #23: 0x036edf44 CoreFoundationCFRunLoopRunSpecific + 276 frame #24: 0x036ede1b CoreFoundationCFRunLoopRunInMode + 123
  frame 22095844: There's no reminder if you forget to unlock your watch #25: 0x02b757e3 GraphicsServicesGSEventRunModal + 88 frame #26: 0x02b75668 GraphicsServicesGSEventRun + 104
  frame 22094327: Mac OS X 10.10.4: Managing Gatekeeper's automated re-enable via a management profile #27: 0x00b57ffc UIKitUIApplicationMain + 1211 frame #28: 0x00001fec RTEDemoAppmain(argc=1, argv=0xbffff208) + 92 at main.m:15

At first glance I assume that you would want to modify _adjustForAutomaticKeyboardInfo:animated:lastAdjustment: to check if the UITableViewController's view is part of the view hierarchy of the inputView that triggered the inputView frame size change notification.

Product Version: 6.1.3
Created: 2013-05-08T11:13:39.055560
Originated: 2013-05-08T13:13:00
Open Radar Link: http://www.openradar.me/13836932